Java tutorial
package fyp.hkust.facet.activity; import android.app.Activity; import android.content.Intent; import android.content.res.Configuration; import android.graphics.Typeface; import android.os.Bundle; import android.preference.Preference; import android.preference.PreferenceActivity; import android.preference.PreferenceCategory; import android.preference.PreferenceFragment; import android.support.annotation.LayoutRes; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.support.v4.app.NavUtils; import android.support.v7.app.ActionBar; import android.support.v7.app.AppCompatDelegate; import android.support.v7.widget.Toolbar; import android.text.Spannable; import android.text.SpannableString; import android.text.SpannableStringBuilder; import android.text.Spanned; import android.text.style.StyleSpan; import android.util.Log; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import com.google.firebase.auth.FirebaseAuth; import fyp.hkust.facet.R; import fyp.hkust.facet.util.CustomTypeFaceSpan; import fyp.hkust.facet.util.FontManager; import fyp.hkust.facet.util.TypefaceSpan; /** * Created by ClementNg on 2/4/2017. */ public class SettingsActivity extends PreferenceActivity implements Preference.OnPreferenceChangeListener { private AppCompatDelegate mDelegate; @Override protected void onCreate(Bundle savedInstanceState) { getDelegate().installViewFactory(); getDelegate().onCreate(savedInstanceState); getDelegate().getSupportActionBar().setHomeButtonEnabled(true); getDelegate().getSupportActionBar().setDisplayHomeAsUpEnabled(true); super.onCreate(savedInstanceState); // ?SharePreferences SpannableString s = new SpannableString(getTitle().toString()); s.setSpan(new TypefaceSpan(SettingsActivity.this, FontManager.CUSTOM_FONT), 0, s.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); getDelegate().getSupportActionBar().setTitle(s); getFragmentManager().beginTransaction() .replace(android.R.id.content, new SettingsActivity.MyPreferenceFragment()).commit(); } private void convertPreferenceToUseCustomFont(Preference somePreference) { Typeface fontType = FontManager.getTypeface(getApplicationContext(), FontManager.APP_FONT); CustomTypeFaceSpan customTypefaceSpan = new CustomTypeFaceSpan("", fontType); SpannableStringBuilder ss; if (somePreference.getTitle() != null) { ss = new SpannableStringBuilder(somePreference.getTitle().toString()); ss.setSpan(new StyleSpan(Typeface.BOLD), 0, ss.length(), 0); ss.setSpan(customTypefaceSpan, 0, ss.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE); somePreference.setTitle(ss); } if (somePreference.getSummary() != null) { ss = new SpannableStringBuilder(somePreference.getSummary().toString()); ss.setSpan(customTypefaceSpan, 0, ss.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE); somePreference.setSummary(ss); } } public class MyPreferenceFragment extends PreferenceFragment { private final static String TAG = "MyPreferenceFragment "; private FirebaseAuth mAuth; private FirebaseAuth.AuthStateListener mAuthListener; @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.preferences); if (isAdded()) { getResources().getString(R.string.app_name); } mAuth = FirebaseAuth.getInstance(); mAuthListener = new FirebaseAuth.AuthStateListener() { @Override public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) { if (firebaseAuth.getCurrentUser() == null) { Intent loginIntent = new Intent(getContext(), LoginActivity.class); loginIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(loginIntent); // User is signed out Log.d(TAG, "onAuthStateChanged:signed_out. Haven't logged in before"); } if (firebaseAuth.getCurrentUser() != null) { // User is signed in Log.d(TAG, "onAuthStateChanged:signed_in user_id:" + firebaseAuth.getCurrentUser().getUid()); } } }; mAuth.addAuthStateListener(mAuthListener); PreferenceCategory category1 = (PreferenceCategory) findPreference("userControls"); convertPreferenceToUseCustomFont(category1); PreferenceCategory category2 = (PreferenceCategory) findPreference("about"); convertPreferenceToUseCustomFont(category2); Preference notificationReceiveButton = findPreference("notificationReceiveButton"); convertPreferenceToUseCustomFont(notificationReceiveButton); Preference openSourceLicenses = findPreference("openSourceLicenses"); convertPreferenceToUseCustomFont(openSourceLicenses); Preference aboutButton = findPreference("aboutUs"); convertPreferenceToUseCustomFont(aboutButton); aboutButton.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { //code for what you want it to do startActivity(new Intent(getActivity(), AboutUsActivity.class)); return true; } }); Preference ratingButton = findPreference("ratingButton"); convertPreferenceToUseCustomFont(ratingButton); ratingButton.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { //code for what you want it to do return true; } }); Preference logoutButton = findPreference("logoutButton"); convertPreferenceToUseCustomFont(logoutButton); logoutButton.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { //code for what you want it to do logout(); startActivity(new Intent(getActivity(), MainMenuActivity.class)); return true; } }); } private void logout() { mAuth.signOut(); } } public boolean onPreferenceChange(Preference preference, Object newValue) { // TODO Auto-generated method stub // if(preference.getKey().equals("EditTextP")) //??key??Preference // preference.setSummary("EditTextPreference Value:" +newValue); // else if(preference.getKey().equals("ListP")) // preference.setSummary("ListPreference Value:" +((ListPreference) preference).getEntries()[Integer.parseInt(newValue.toString())]); // //Entry??item value // else if(preference.getKey().equals("RingtoneP")) // preference.setSummary("RingtonePreference Value:" +newValue); // else if(preference.getKey().equals("SPCEditTextP")) // preference.setSummary("EditTextPreference Value:" +newValue); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: NavUtils.navigateUpFromSameTask(this); return true; } return super.onOptionsItemSelected(item); } @Override protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); getDelegate().onPostCreate(savedInstanceState); } public ActionBar getSupportActionBar() { return getDelegate().getSupportActionBar(); } public void setSupportActionBar(@Nullable Toolbar toolbar) { getDelegate().setSupportActionBar(toolbar); } @Override public MenuInflater getMenuInflater() { return getDelegate().getMenuInflater(); } @Override public void setContentView(@LayoutRes int layoutResID) { getDelegate().setContentView(layoutResID); } @Override public void setContentView(View view) { getDelegate().setContentView(view); } @Override public void setContentView(View view, ViewGroup.LayoutParams params) { getDelegate().setContentView(view, params); } @Override public void addContentView(View view, ViewGroup.LayoutParams params) { getDelegate().addContentView(view, params); } @Override protected void onPostResume() { super.onPostResume(); getDelegate().onPostResume(); } @Override protected void onTitleChanged(CharSequence title, int color) { super.onTitleChanged(title, color); getDelegate().setTitle(title); } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); getDelegate().onConfigurationChanged(newConfig); } @Override protected void onStop() { super.onStop(); getDelegate().onStop(); } @Override protected void onDestroy() { super.onDestroy(); getDelegate().onDestroy(); } public void invalidateOptionsMenu() { getDelegate().invalidateOptionsMenu(); } private AppCompatDelegate getDelegate() { if (mDelegate == null) { mDelegate = AppCompatDelegate.create(this, null); } return mDelegate; } @Override public void onBackPressed() { super.onBackPressed(); this.finish(); } }